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XRAY T4'20 SPEC

Old 10-08-2020, 09:24 AM
  #946  
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Originally Posted by Dan View Post
Having never ran a solid aluminum chassis, how does it work on a medium-high traction black carpet track? (specifically USGT and VTA). Stick with the aluminum-flex for the best performance?

Or is the solid aluminum chassis only best reserved for high to ultra-high big races?
I've found the solid to be more consistent and easier to drive. For the classes youíre mentioning, you have the added benefit of a slightly heavier chassis, putting weight as low as possible.
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Old 10-08-2020, 01:58 PM
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Originally Posted by 3TurnRacing View Post
I could see the Split Upper Deck happening
Serpent just published first images of X21 (???) and they went for an full asymmetrical upper-deck... Could be a possibility also, even if it is mechanically wrong.
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Old 10-08-2020, 02:56 PM
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lol.. at least Serpent went with standard shocks on the X20 versus a Damper style spin-off. The X20 reminds me of the New Mugen TC
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Old 10-09-2020, 11:52 AM
  #949  
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RC Market prices:
T4 2021 $629
T4 2021 conversion set $240

So think twice before buying an used T4 2020 for more than $389. hahaha.
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Old 10-09-2020, 02:12 PM
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Originally Posted by bd007 View Post
RC Market prices:
T4 2021 $629
T4 2021 conversion set $240

So think twice before buying an used T4 2020 for more than $389. hahaha.
I wonder what is included in the conversion kit?
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Old 10-10-2020, 03:00 PM
  #951  
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Originally Posted by 3TurnRacing View Post
lol.. at least Serpent went with standard shocks on the X20 versus a Damper style spin-off. The X20 reminds me of the New Mugen TC
Yeah, just in the opposite order lol
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Old 10-13-2020, 06:37 AM
  #952  
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Originally Posted by Sortafast View Post
I've found the solid to be more consistent and easier to drive. For the classes youíre mentioning, you have the added benefit of a slightly heavier chassis, putting weight as low as possible.
Thanks!

Anyone else with additional input?
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Old 10-13-2020, 08:50 AM
  #953  
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The solid is the chassis to go to on almost all carpet surfaces. Even when 360 had gray carpet for NYGP last year, the whole team ran the solid chassis in 17.5 and slower classes.

Ive never been to a race on black carpet where flex was faster. To me, the flex chassis makes great steering but it twists too much and scrubs corner speed. The solid carries better corner speed and can be tuned to generate the same steering.

I would recommend using the 1.6 topdeck with the solid chassis. From my experience, carpet cars are always better with a stiffer chassis and softer topdeck. The softer topdeck will help calm down a car that is tippy, and it increases mid-corner steering.
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Old 10-16-2020, 10:06 AM
  #954  
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Default Setup help.

So, I have a T4 20, box setup except for a few roll center changes I have tried with inner link shims. We race on low grip carpet, and with the mid motor car I am lacking rear traction. I just got a new body painted up that is the JP8 from Bitty that is high downforce, and I will try it out tonight before any other changes.

but, if the body doesnít give enough, whatís some changes I can make to get the rear to stick better?
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Old 10-16-2020, 10:44 AM
  #955  
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Is the car over steering at corner entry, mid corner, or corner exit. That will have an impact on what changes to look at.

You can also try downloading the Hudy Setup book. On the last page, it has a table that lists out setup changes based on car behavior. Here is a link Setup Book. The top entry is the english setup manual.
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Old 10-16-2020, 11:04 AM
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Originally Posted by 0010 View Post
Is the car over steering at corner entry, mid corner, or corner exit. That will have an impact on what changes to look at.

You can also try downloading the Hudy Setup book. On the last page, it has a table that lists out setup changes based on car behavior. Here is a link Setup Book. The top entry is the english setup manual.

entry. Good on the high speed sweeping turns, bad in the infield thatís tight with several direction changes.

will look at the book. Think I am going to move my electronics around, and take some droop out of the rear to start with.
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Old 10-16-2020, 11:59 AM
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Originally Posted by mocrawlin View Post
entry. Good on the high speed sweeping turns, bad in the infield thatís tight with several direction changes.

will look at the book. Think I am going to move my electronics around, and take some droop out of the rear to start with.
Yeah, the two things I would start with is removing some rear droop and a stiffer front sway bar. Try one thing at a time and see what happens. Good Luck!
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Old 10-17-2020, 12:10 AM
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Well, took some rear droop out and it was better for sure. Body helped quite a bit really. Actually had to turn the dual rate up a little. Went up to 5000 diff fluid and it was pretty good. Ended up TQing in the second round of qualifying and lead the race till the last 2 laps and just have the race away. LoL oh well, it was fun.

so, next week we donít race on road, so, I have 2 weeks to rewire and reposition the esc and reciever like itís meant to be. I was in a hurry and didnít have any wire to put the esc behind motor, so itís in front and I think the weight from esc in the rear, will help a lot. So, I look forward to racing again in a couple weeks! Thanks for the tips guys. The droop adjustments definitely helped.
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Old 10-27-2020, 07:08 AM
  #959  
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Hello Everyone... With the indoor season upon us I wanted to share my setups from this past weekends Halloween Classic in Cleveland, OH. I ran 17.5 TC also Stock Spec TC.... Stock Spec TC we ran the MOTIV USGT 21.5 Closed Timing Motor

Cars worked well all weekend... 17.5 was able to TQ/finish 3rd - Stock I qualified 2nd and finished 2nd

17.5 Set Up: https://setup.teamxray.com/sheet/view?userSheetId=19246
Stock Set Up: https://setup.teamxray.com/sheet/view?userSheetId=19247

If anyone has any questions please let me know...
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Old 10-27-2020, 04:57 PM
  #960  
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Marc; Rear roll center on Stock was the same was 17.5????? you left out 1.0 or .5 for the rear pin bushing

Thanks Carl from Apex.
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